html,head,body,h1,h2,h3,h4,h5,h6,div,figcaption,figure,span,main,.iconfont,img,nav,ul,li{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
html,body{
    height: 100%;
}
body{
    display: flex;
    flex-direction: column;
}
ul,li{
    list-style: none;
}
a,u,del{
    text-decoration: none;
    color: inherit;
}
h1,h2,h3,h4,h5,h6{
    font-size: 16px;
}
b,strong{
    font-weight: normal;
}
img{
    display: block;
}
@media screen and (min-width:320px) and (max-width:321px){
    body{
        font-size: 12px;
    }
}
@media screen and (min-width:375px) and (max-width:376px){
    body{
        font-size: 14px;
    }
}
em,i{
    font-style: normal;
}
.clear{
    clear: both;
}
